Simulação numérica de uma estrutura tridimensional considerando a interação solo-estrutura

Resumo

The dynamic behavior in the study of Soil-Structure Interaction (SSI) has attracted intense interest
among researchers and engineers from diverse areas, as it is a fundamental principle to ensure the safety and
structural stability of buildings that are increasingly slender and flexible. However, problems associated with the
practical application of SSI are harmed by complex literature, in addition to codes and standards with limited
guidelines and practical examples with scarce applications. Thus, the present study proposes to numerically
analyze the SSI of a three-dimensional (3D) structure based on the modal response. The model is discretized in an
equivalent mass-spring-dampener system, the structure is a system of concentrated masses and soil represented by
a system of springs and dampeners calculated through impedance coefficients. Posteriorly, the geometry is
modeled and the SSI is coupled with the structure receiving excitation from the base. For such, the finite element
method and the ANSYS software are used. The results showed the vibration modes and the harmonic and transient
response of the structure with the greatest displacement occurred on the third floor at a frequency of 1.1417 Hz.
Therefore, the study made possible to identify the dynamic behavior of the structure before external action at the
base.